App Ops Desk · Issue #39

Build reproducibility for solo CI

If you cannot recreate last week’s binary inputs, you do not have a release process — you have folklore.

Read time: 6 min CI Process Pairs with Issues #11 and #7
One action this week: Write the exact Xcode version, scheme, configuration, and git SHA for your last store build into the release log.

Reproduce kit

  • Git SHA + dirty/clean state
  • Xcode version + build number
  • Scheme / configuration / destination
  • Resolved package versions (SPM lock or equivalent)
  • Which machine/CI job produced the IPA

Failure modes

  • Shipping from a dirty tree
  • Different Xcode locally vs CI “by accident”
  • Floating dependency versions on release day

Bottom line

Reproducibility is how you debug production without guessing which laptop lied.

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